private static bool CheckSingleFolder(string folderPath)
{
string indexFileName = Path.GetFullPath(folderPath + @"\zones.idx");
if (!File.Exists(indexFileName))
{
return(false);
}
IEnumerator <string> ppmxlFiles = PPMXLFileIterator.PPMXLFiles(folderPath);
while (ppmxlFiles.MoveNext())
{
if (File.Exists(ppmxlFiles.Current))
{
// Some people may only have a partial version of the catalogue (e.g. Northern Hemisphere)
return(true);
}
}
return(false);
}
public static void BuildFullIndex(string catalogLocation)
{
int idx = -1;
IEnumerator <string> filesEnu = PPMXLFileIterator.PPMXLFiles(catalogLocation);
string fileNameIndex = catalogLocation + "zones.idx";
if (File.Exists(fileNameIndex))
{
MessageBox.Show(string.Format("Index file {0} already exists.", fileNameIndex));
return;
}
using (FileStream fs = new FileStream(fileNameIndex, FileMode.Create, FileAccess.Write))
using (BinaryWriter bwrt = new BinaryWriter(fs))
{
while (filesEnu.MoveNext())
{
string fileName = filesEnu.Current;
Console.WriteLine(fileName);
idx++;
int[] raIdx = new int[360];
int raCurr = 0;
int recNo = -1;
using (FileStream fileStr = new FileStream(fileName, FileMode.Open, FileAccess.Read))
using (BinaryReader rdr = new BinaryReader(fileStr))
{
byte[] header = rdr.ReadBytes(174);
while (true)
{
recNo++;
byte[] data = rdr.ReadBytes(174);
if (data == null || data.Length == 0)
{
break;
}
PPMXLEntry entry = new PPMXLEntry(Encoding.ASCII.GetString(data));
int raTrunc = (int)entry.RADeg;
while (raTrunc >= raCurr)
{
//Console.WriteLine("Index[" + raCurr.ToString() + "] = " + recNo.ToString());
if (raCurr < 360)
{
raIdx[raCurr] = recNo;
}
raCurr++;
}
}
}
while (360 > raCurr)
{
//Console.WriteLine("Index[" + raCurr.ToString() + "] = " + (recNo - 1).ToString());
raIdx[raCurr] = recNo - 1;
raCurr++;
}
for (int j = 0; j < 360; j++)
{
bwrt.Write(raIdx[j]);
}
}
bwrt.Flush();
}
}